CR O-rings 90 Shore A

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	Dimensions	Material	Hardness (Shore A)	Certification

O-ring Black	23.40 mm x	CR-Neoprene	90 Shore A	Nee
O-ring Black	136.13 mm x	CR-Neoprene	90 Shore A	Nee
O-ring Black	56.83 mm x	CR-Neoprene	62 Shore A	Nee
O-ring Black	71 mm x 1 mm	CR-Neoprene	90 Shore A	Nee
O-ring Black	175 mm x 6 mm	CR-Neoprene	90 Shore A	Nee
O-ring Black	259 mm x 6 mm	CR-Neoprene	90 Shore A	Nee
O-ring Black	116 mm x 5 mm	CR-Neoprene	90 Shore A	Nee
O-ring Black	281 mm x 6 mm	CR-Neoprene	90 Shore A	Nee
O-ring Black	82 mm x 4 mm	CR-Neoprene	90 Shore A	Nee
O-ring Black	20.30 mm x	CR-Neoprene	62 Shore A	Nee
O-ring Black	410 mm x 5 mm	CR-Neoprene	90 Shore A	Nee

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What is CR (Chloroprene rubber):

O-rings from Neoprene rubbers are homopolymers of chloroprene (chlorobutadiene) and functional to the earliest synthetic rubbers used to produce seals. CR O-rings are not useful in environments with aromatic and oxygen-rich solvents. Different compositions can be used to form Neoprene for operating temperatures from -40 °C to + 110 °C.

The advantage of CR O-rings:

Good resistance to bending cracks
Good aging properties in ozone and weather environments
Operating temperatures from -40 °C to + 110 °C

The disadvantage of CR O-rings:

Poor resistance to petroleum-based lubricants
Poor resistance to oxygen